[Roasty]

The wa33 does look sexy as hell though ha ha ha

Could someone help and confirm the pin out config for the female 4 pin xlr on a speaker tap adaptor cable? Is it Pin 1 = Right Speaker RED, Pin 2 = Right Speaker BLACK, Pin 3 = Left Speaker RED, Pin 4 = Left Speaker BLACK?

 

[pataburd]

Sophia Electric "Baby" driving the HEDDphone:

 

[kid vic]

Sophia Electric "Baby" driving the HEDDphone:

How do you like it so far? Is it new or used?

 

[beemerphile]

The wa33 does look sexy as hell though ha ha ha

Could someone help and confirm the pin out config for the female 4 pin xlr on a speaker tap adaptor cable? Is it Pin 1 = Right Speaker RED, Pin 2 = Right Speaker BLACK, Pin 3 = Left Speaker RED, Pin 4 = Left Speaker BLACK?

Backwards. Pin 1 is Left (+); Pin 2 is Left (-); Pin 3 is Right (+); Pin 4 is Right (-).

 

[pataburd]

kid vic,
I like the Sophia Baby [used, V1, 10WPC model]/HEDDphone pairing. Sounds pretty good, even with mediocre tubes.
Excellent treble detail and transparent midrange. Soundstage is airy and 3-D with very good imaging. Bass is well defined, but not prominent.
Have a matched pair of JAN GE 5670 and matched quad of Russian military 6P3S-E to swap in later, that should ratchet things up a notch or two.

 

[Happy Camper]

kid vic,
I like Sophia Baby/HEDDphone pairing. Sounds pretty good, even with mediocre tubes.
Excellent treble detail and transparent midrange. Soundstage is airy and 3-D with very good imaging. Bass is well defined, but not prominent.
Have a matched pair of JAN GE 5670 and matched quad of Russian military 6P3S-E to swap in later, that should ratchet things up a notch or two.

I like your organization. What are your feet isolators?

 

[Roasty]

Backwards. Pin 1 is Left (+); Pin 2 is Left (-); Pin 3 is Right (+); Pin 4 is Right (-).

thanks a lot! You've been extremely helpful. I did figure it out soon after posting and referencing some pics online. That was the question put forward by the cable maker, so I wasn't sure if he was sure or unsure..

 

[pataburd]

I like your organization. What are your feet isolators?

Happy Camper,
Thank you. Will be adding/trying some tube dampers later on.

The isolation platforms beneath the amp are comprised of machined maple discs about 3/4" thick, each with a hole/recess in the middle to fit a glass sphere [marble]. The spheres lodge up into the recesses of the rubber feet of the amp. This mimics a popular isolation device whose name escapes me at the moment.

Under my source [in this case a Ric Schultz/EVS-modded Sony BDP-S780], I use 3x #4 Vibrapods, and nested in each Vibrapod [3x] is a racquetball. This utilizes the Gingko isolation platform principle, but is a lot cheaper. There is a marble slab atop the S780 to further suppress vibration.

pataburd

 

[Rossliew]

Sophia Electric "Baby" driving the HEDDphone:

Are you driving the cans straight off the taps without any resistor in place? I've always been under the impression that one should not drive headphones directly off the speaker taps of a transformer coupled tube amp. Or am i wrong to think as such?

 

[pataburd]

No resistors in place. But had thought about putting resistors and maybe some ByBee Slipstreams in between.
Volume was at 30 to 40%: moderately loud, but not ear-splitting.
Would some else care to chime in here [since I cannot answer Rossliew's question]?
What would be the reason(s) for not hooking up without resistors?
[As you can see, I am as dumb as a fencepost here.]

 

[Sonic Defender]

I would contact the manufacturer and ask them as the amps design may be ok with this; however, it is possible that you are straining your amp. This little thread early on covers the basics of this.

https://www.head-fi.org/threads/safe-to-drive-headphones-with-tube-speaker-amp.680786/

 

[wuwhere]

No resistors in place. But had thought about putting resistors and maybe some ByBee Slipstreams in between.
Volume was at 30 to 40%: moderately loud, but not ear-splitting.
Would some else care to chime in here [since I cannot answer Rossliew's question]?
What would be the reason(s) for not hooking up without resistors?
[As you can see, I am as dumb as a fencepost here.]

I have that amp too. I've always used resistors. I have two other speaker tube amps to drive my HE-6, I always used resistors. I also use a Linn Klout solid state amp, I never tried resistors on it. I prefer tube amps though.

 

[pataburd]

Thank you.
What resistors do you use?
How are they implemented?

 

[wuwhere]

Like this.

My Sophia looked like this.

 

[wuwhere]

Also, don't turn on tube amps with output transformers without any load. Its not good for the output transformers.